NOWAK, K. A. Differences in the certification of DP Operator’s Certificates according to the Nautical Institute and DNV. Scientific Journal of Gdynia Maritime University, [S. l.], v. 1, n. 118, p. 51–61, 2021. DOI: 10.26408/118.04. Disponível em: https://ojs.umg.edu.pl/index.php/sjgmu/article/view/52. Acesso em: 6 may. 2024.